One of the big winners of the Unity debacle is the free and open source Godot Engine, which has seen its funding soar to a much more impressive level as Unity basically gave them free advertising.
One of the big winners of the Unity debacle is the free and open source Godot Engine, which has seen its funding soar to a much more impressive level as Unity basically gave them free advertising.
Open-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose.
from Wikipedia
The same article also talks about the difference between open source and source available:
Although the OSI definition of "open-source software" is widely accepted, a small number of people and organizations use the term to refer to software where the source is available for viewing, but which may not legally be modified or redistributed. Such software is more often referred to as source-available, or as shared source, a term coined by Microsoft in 2001
Under that strict definition, software under the GNU GPL would not be "open source" because the license stays with the code, and is not truly "for any purpose," which is the same deal with the Epic license: you may use, study, change, and distribute the Unreal source code, but it stays under Epic's license.
If you are talking about the FREEDOM to fork and publish and share and whatever, then you mean Free software.
You are not allowed to distribute unreal source. From their FAQ:
Unreal Engine licensees are permitted to post engine code snippets (up to 30 lines) in a public forum, but only for the purpose of discussing the content of the snippet
But the code is easily visible and you can compile it yourself. If you say "I only run software I 100% knows what it does because I can read it's source code" then Unreal Engine fits, it's open source.
they want it to be open source so that they can’t do a unity
That has nothing to do with open source, that has to to with licensing, which I'm pretty sure isn't an issue anyway since I think Unreal versions are tied to specific license versions, i.e. if you download the engine under one term, thats the only one you have to use